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feedback loop/feedback/evolutionary feedback

"Feedback is a method of controlling a system by reinserting into it the results of its past performance" (Wiener, 1954/1967, p. 84). Feedback loops and feedback structures are essential elements in cybernetic systems. In traditional family theory, negative (deviation-counteracting) feedback was conceptualized as regulating families and other systems (homeostasis), as a precondition for the survival of the system in a constantly changing environment. This formulation was more satisfactory for explaining stability and morphostasis than in understanding change, especially discontinuous change. The concepts of positive (deviation-amplifying) feedback and evolutionary feedback, as well as morphogenesis, coherence, and coevolution, have been advanced to correct "simple" feedback theories.

Definition extracted with permission from Simon, Fritz, et al, Family Process, Inc.: Language of Family Therapy: A Systemic Vocabulary and Source Book (Family Process Press Series)

Books, etc.